package com.leetcode;

/**
 *
 */
public class 整数转罗马数字 {

    public static void main(String[] args) {
        System.out.println(intToRoma(1));
    }

    public static String intToRoma(int num) {
        int[] values = {1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1};
        String[] symbols = {"M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"};
        StringBuilder builder = new StringBuilder();

        for (int i = 0; i < values.length; i++) {
            String symbol = symbols[i];
            while (num >= values[i]) {
                builder.append(symbol);
                num -= values[i];
            }
            if (num <= 0) {
                break;
            }
        }

        return builder.toString();
    }

}
